The current working directory (D:\Test SenchaSDKTools) is not a recognized Sencha SDK

Hi All

I am new to sencha touch development

Please can any one suggest me detailed steps for how to install and build native application for android using Sencha SDK Tools 2.0.0-beta3 and sencha-touch-2.1.1-gpl.
I am getting the error like this on my windows machine The current working directory (D:\Test SenchaSDKTools) is not a recognized Sencha SDK or application folder. Running in backwards compatible mode.

my SDK is where i extracted my ExtJS files. ~/current/gaia/static/js/ext-5.1.1

you can generate workspace from within the folder like this: sencha generate workspace /tmp/extJSworkSpace
or
you can specify it's location if you are not in the folder. sencha -sdk ~/current/gaia/static/js/ext-5.1.1 generate workspace /tmp/extJSworkSpace